Printing Silicone 40A and Alumina 4N on Form 4L

We are in the process of choosing the right printer. We need a large build volume and the ability to print silicone. Do I understand correctly that even though its smaller cheaper sibling can print it, Form 4L cannot print silicone?

The same question goes for Alumina 4N.

If so, why? Are there any plans to open these materials to Form 4L?

Feel free to answer in detail, thank you very much for your effort.